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[Official] Chimp Challenge 2012 - Finished! - Page 27

post #261 of 4207
The reason your CPU is making progress so slowly is because it's own folding is being slowed down by the AMD GPU which needs a significant amount of CPU time to do it's folding. So what you want to do is make your CPU fold on only 3 cores instead of four, but you should finish the current work unit (WU) the CPU is folding before doing so. What you can do to make the CPU finish it's current WU faster is to pause the AMD GPU for now, then resume it after you've finished the CPU WU and changed it over to only using 3 cores.

What you need to do to make the CPU use just 3 out of 4 threads, is to first right click your CPU SMP folding slot and then select finish, then wait until the CPU finishes the current WU it is folding. If you do not wait until the WU has been finished folding then the WU will be lost, and losing WUs is a detriment to the research being done and should be avoided if at all possible. When the CPU has finished it's current WU and stopped folding go into the configuration menu, go to the slots tab, select the SMP slot, then click edit. In the edit window that will pop up in the SMP section under the CPUs field change the default value of -1 to a 3, then accept the changes and resume folding. After making that change you can then resume the AMD GPU and everything should play together much nicer.
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post #262 of 4207
I'll keep saying this til people listen:

teaching.gifThere's no point folding on AMD AND SMP at the same time!! teaching.gif

Please listen.
post #263 of 4207
My X4@3 gets ~7-9k on its own, 6970@1G gets 9.5k on its own, combined they'll do about 3+9=12k. So certain configurations have a benefit (probably ones with low CPU power).
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post #264 of 4207
You get a couple of extra thousand PPD (best case scenario) at the cost of using so much more electricity.

Hence, not worth it tongue.gif
post #265 of 4207
Normally I'd agree with you, but I'll do this for the CC.
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post #266 of 4207
Quote:
Originally Posted by omega17 View Post

You get a couple of extra thousand PPD (best case scenario) at the cost of using so much more electricity.
Hence, not worth it tongue.gif

In my case the GPU was getting about 8200 PPD on average. Added VMWare and folding on my 1055T using 4 cores, the GPU only dropped by 150 PPD. The CPU is getting about 10-12k. Electricity... it's only for 10 days.

My live stats are at the bottom: http://www.ilaughatjoo.com/darkpredators/
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post #267 of 4207
Well in that case, I'll throw my 6950 into my extra rig and have that fold just the 6950, then run my extra 275 plus my 275 that I have in here now with my i5. That should work right?
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post #268 of 4207
Quote:
Originally Posted by raiderxx View Post

Well in that case, I'll throw my 6950 into my extra rig and have that fold just the 6950, then run my extra 275 plus my 275 that I have in here now with my i5. That should work right?
that should do a pretty good job
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post #269 of 4207
Omega17, "NO POINT!!" is kinda against the spirit of why we fold anyway, "much less efficient" sure I can agree with, but "NO POINT!!" sounds like the people that say because there's still cancer + Alzheimer's that there's no point in folding. I understand the distinction between your point and theirs but the tone is similar to me.

Also I really don't think you can make the blanket statement that nobody should be helping these people set up SMP + AMD as long as the person helping them explains the entire situation to them. In this case I admit I did not mention that folding on a AMD GPU is very inefficient in terms of PPD/W but I usually do give them that information. Had I not forgotten to let the person know about the efficiency consideration then if they still choose to fold that way then I don't think you can blame either them or the person that helped them. We all may be folding for different reasons and with different goals in mind, so while you may be most concerned with PPD/W that doesn't mean that is the be all end all for everyone. I myself for example am more concerned that I have all the hardware available to me folding at it's peak efficiency rather than only folding what will get me the most amount of points, because keep in mind the points are arbitrary and can't really be compared from one project to another.

You can really only use points (or more accurately TPF or WU completion time) to compare how well you do that specific WU compared to others time's for that specific WU, but you can't accurately say "oh well I do twice the PPD of you so I am worth exactly twice as much to the research" if you're folding different things with different arbitrary point values attached to them. For example, do you think that a 2600k getting 60k PPD in bigadv is worth twice as much as the exact same 2600k getting 30k PPD in SMP? How about is my 580 worth twice as much to the research when it's folding a 8020 as it is when it's folding a 7640, just because the point value are different (16K versus 26k PDD on exact same hardware)? I don't think you can say that because we don't know exactly what the different WUs are really worth to the research, only the arbitrary point values assigned to them. I think you can see the point I'm making and that is that I try to recognize the value in every WU that Stanford wants done, not just the ones that have the most favorable point values attached to them. We also need to remember that somebody needs to be folding on AMD GPUs (same as the fact that somebody needs to run the unicore client), because they are getting different WUs working on different things.

Your point also admittedly ignores the fact that this is actually a PPD net gain in almost all cases, so again PPD/W may not trump all other factors for all contributors involved in F@H.

BTW I'm not trying to start an argument (even though I used my wall of text attack) I was just trying to explain why I so often do recommend or help people set up SMP and AMD GPUs scenarios although as mentioned I try to always make them aware of the efficiency aspect, I just failed to do so this time.
Edited by juano - 5/5/12 at 6:17pm
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post #270 of 4207
So is there any tweaking/setting up i should do with my sig rig?

So far ive installed the latest client and i see that my cpu and gpus are running at 100% - is there more to it than that? Whats the -bigadv (or whatever) ppl keep mentioning?

Any help/pointers will be greatly appreciated - i just want to contribute as much as i can for this event smile.gif
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